Tuesday, May 9, 2017

When 100% cpu utilization is not really 100%

100% does not always mean 100%

Some people mistakenly look at tools inside of a guest operating system (for example, the task manager) and when faced with 100% cpu utilization, they automatically believe that such virtual machine needs more vcpus. Not necessarily. You really need to look at what is taken place on the host and compare the results. Remember that the guest OS is not aware of what is actually happening on the host.